计及输电阻塞的发电公司最优竞价模型  

Optimal bidding models of power plants considering transmission congestion

作　　者：张谦[1] 俞集辉[1] 李春燕[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2009年第12期1461-1465,共5页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50777067)

摘　　要：为了实现电力市场环境下发电公司最优竞价,根据对市场内其他机组报价系数的预测,建立计及竞争对手报价的发电公司竞价模型,求取未计及输电容量约束时的最优竞价系数。建立市场出清模型,计算各机组出力期望值,根据上述期望值进行潮流计算。当预测有输电阻塞发生时,将输电阻塞对电力公司竞价策略的影响引入竞价模型中,并基于灵敏度分析以阻塞费用最小为目标确定发电公司出力调整量。通过Matlab仿真分析表明,采取上述方法得到的最优竞价系数进行报价时,能实现发电公司利润最大化的目标。In order to achieve optimal bidding strategy of power plants in electricity market,the authors build optimal bidding model by predicting the bidding coefficients of competitors,and the optimal bidding coefficient without considering transmission capacity is achieved. Based on the bidding coefficients,the market clearing model is built,and the expected market clearing price is achieved. According to the expected values,the authors calculate the power flow. When forecasting the transmission congestion,this paper presents an optimal bidding model taking transmission congestion into account. Based on sensitivity analysis,the output regulation of power plants with minimum cost of eliminating congestion is achieved. Simulation results demonstrate that the proposed method can help power plants achieve the optimal profit.

关 键 词：发电公司 竞价模型 输电网络计算 输电阻塞 灵敏度分析 

分 类 号：TM732[电气工程—电力系统及自动化]